22 



PROCESSING OCEANOGRAPHIC DATA 



TEMPERATURE AND DEPTH CALCULATIONS 



Figure 23.— Form 2 with example for "TEMPERATURE AND DEPTH CALCULATIONS". 



7: The index correction, (7), is found from the cali- 

 bration sheet for each thermometer at the appro- 

 priate temperature. It is also added algebraically to 

 T' or TV. (Note: Frequently C and 7 are found 

 simultaneously.) 



T^ and T^ or T^: Entries in these columns are the sum 

 of the terms T'7C7l (or r'„+C+7). T„ is the 

 water temperature in situ, the corrected reading of a 

 protected thermometer. T^ is the corrected reading 

 of an unprotected thermometer. 



AVERAGE Tu'. If both left and right thermometers are 

 protected, the entry in this column is the average 

 of the two corrected readings, T„. If only the left 

 thermometer is protected, the corrected reading of 

 that thermometer, T„, is copied in this column. 

 Entries represent the best obtainable values of the 

 temperature in siht. 



Tu—Tu,: Entries are made in this and the following 

 column only at levels where an unprotected thermom- 

 eter was used. At these levels, T^—Tu, is the differ- 

 ence between the entries in the preceding two 

 columns. 



THERMOMETRic DEPTH: Thermometrlc or calculated 

 depth of reversal of each unprotected thermometer 

 as found by graph or tables. (See sec. D. 2.) 



WIRE LENGTH MINUS DEPTH: The difference between 

 wire length and thermometrlc depth is determined 

 from the appropriate columns, and entered for each 

 thermometric depth. These differences are plotted 

 against wire length, and a smooth curve drawn. 

 Additional entries for this column may be read from 

 the cur\e at the appropriate wire lengths. (See 

 sec. D. 2.) 



ACCEPTED depth: Accepted depth of each water bottle 

 is obtained by subtracting the entry in the preceding 

 column from the wire length. 



DYNAMIC CALCULATIONS 



The third form, "Dynamic Calculations," 

 shown in figure 24, is designed for the calcula- 

 tion of d^iiamic height anomalies used in the 

 determination of currents. The equations and 

 processing aids are discussed in section D. 3. 



